Testing Cosmic-Ray Propagation Scenarios with AMS-02 and Voyager Data

Understand

AMS-02 on board the ISS provides precise measurements of Cosmic Rays (CR) near Earth, while Voyager measures CR in the local interstellar medium, beyond the effects of solar modulation.

• Based on these data, we test and revise various CR propagation scenarios under standard assumptions: pure diffusion, diffusion with convection, diffusion with reacceleration, and diffusion with reacceleration and convection.
• We report on the scenarios' performance against CR measurements, aiming to limit the number of model parameters as much as possible.
• For each scenario we find parameters that are able to reproduce Voyager and AMS-02 data for the entire energy band for all the CR species tested.